Monthly Historical AveragesPort Jefferson, NY
Average Temperature
High
14°
Feels 13
Low
5°
Feels 3
Average Precipitation
9 Days
81.1mm
0.4cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastThursday, April 2, 2026
Day
7°Feels 3
Wind
30 km/h E
Gust
45 km/h
Humidity
76%
P.O.P
40%
Rain
~1 mm
Night
5°Feels 0
Wind
27 km/h E
Gust
41 km/h
Humidity
100%
P.O.P
40%
Rain
<1 mm
Historical AveragesApr 2
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity